1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
|
/*
* linux/drivers/ide/pci/slc90e66.c Version 0.14 February 8, 2007
*
* Copyright (C) 2000-2002 Andre Hedrick <andre@linux-ide.org>
* Copyright (C) 2006-2007 MontaVista Software, Inc. <source@mvista.com>
*
* This is a look-alike variation of the ICH0 PIIX4 Ultra-66,
* but this keeps the ISA-Bridge and slots alive.
*
*/
#include <linux/types.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/ioport.h>
#include <linux/pci.h>
#include <linux/hdreg.h>
#include <linux/ide.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <asm/io.h>
static u8 slc90e66_dma_2_pio (u8 xfer_rate) {
switch(xfer_rate) {
case XFER_UDMA_4:
case XFER_UDMA_3:
case XFER_UDMA_2:
case XFER_UDMA_1:
case XFER_UDMA_0:
case XFER_MW_DMA_2:
case XFER_PIO_4:
return 4;
case XFER_MW_DMA_1:
case XFER_PIO_3:
return 3;
case XFER_SW_DMA_2:
case XFER_PIO_2:
return 2;
case XFER_MW_DMA_0:
case XFER_SW_DMA_1:
case XFER_SW_DMA_0:
case XFER_PIO_1:
case XFER_PIO_0:
case XFER_PIO_SLOW:
default:
return 0;
}
}
static void slc90e66_tune_pio (ide_drive_t *drive, u8 pio)
{
ide_hwif_t *hwif = HWIF(drive);
struct pci_dev *dev = hwif->pci_dev;
int is_slave = drive->dn & 1;
int master_port = hwif->channel ? 0x42 : 0x40;
int slave_port = 0x44;
unsigned long flags;
u16 master_data;
u8 slave_data;
int control = 0;
/* ISP RTC */
static const u8 timings[][2]= {
{ 0, 0 },
{ 0, 0 },
{ 1, 0 },
{ 2, 1 },
{ 2, 3 }, };
spin_lock_irqsave(&ide_lock, flags);
pci_read_config_word(dev, master_port, &master_data);
if (pio > 1)
control |= 1; /* Programmable timing on */
if (drive->media == ide_disk)
control |= 4; /* Prefetch, post write */
if (pio > 2)
control |= 2; /* IORDY */
if (is_slave) {
master_data |= 0x4000;
master_data &= ~0x0070;
if (pio > 1) {
/* Set PPE, IE and TIME */
master_data |= control << 4;
}
pci_read_config_byte(dev, slave_port, &slave_data);
slave_data &= hwif->channel ? 0x0f : 0xf0;
slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) <<
(hwif->channel ? 4 : 0);
} else {
master_data &= ~0x3307;
if (pio > 1) {
/* enable PPE, IE and TIME */
master_data |= control;
}
master_data |= (timings[pio][0] << 12) | (timings[pio][1] << 8);
}
pci_write_config_word(dev, master_port, master_data);
if (is_slave)
pci_write_config_byte(dev, slave_port, slave_data);
spin_unlock_irqrestore(&ide_lock, flags);
}
static void slc90e66_tune_drive (ide_drive_t *drive, u8 pio)
{
pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
slc90e66_tune_pio(drive, pio);
(void) ide_config_drive_speed(drive, XFER_PIO_0 + pio);
}
static int slc90e66_tune_chipset (ide_drive_t *drive, u8 xferspeed)
{
ide_hwif_t *hwif = HWIF(drive);
struct pci_dev *dev = hwif->pci_dev;
u8 maslave = hwif->channel ? 0x42 : 0x40;
u8 speed = ide_rate_filter(drive, xferspeed);
int sitre = 0, a_speed = 7 << (drive->dn * 4);
int u_speed = 0, u_flag = 1 << drive->dn;
u16 reg4042, reg44, reg48, reg4a;
pci_read_config_word(dev, maslave, ®4042);
sitre = (reg4042 & 0x4000) ? 1 : 0;
pci_read_config_word(dev, 0x44, ®44);
pci_read_config_word(dev, 0x48, ®48);
pci_read_config_word(dev, 0x4a, ®4a);
switch(speed) {
case XFER_UDMA_4: u_speed = 4 << (drive->dn * 4); break;
case XFER_UDMA_3: u_speed = 3 << (drive->dn * 4); break;
case XFER_UDMA_2: u_speed = 2 << (drive->dn * 4); break;
case XFER_UDMA_1: u_speed = 1 << (drive->dn * 4); break;
case XFER_UDMA_0: u_speed = 0 << (drive->dn * 4); break;
case XFER_MW_DMA_2:
case XFER_MW_DMA_1:
case XFER_SW_DMA_2: break;
case XFER_PIO_4:
case XFER_PIO_3:
case XFER_PIO_2:
case XFER_PIO_0: break;
default: return -1;
}
if (speed >= XFER_UDMA_0) {
if (!(reg48 & u_flag))
pci_write_config_word(dev, 0x48, reg48|u_flag);
/* FIXME: (reg4a & a_speed) ? */
if ((reg4a & u_speed) != u_speed) {
pci_write_config_word(dev, 0x4a, reg4a & ~a_speed);
pci_read_config_word(dev, 0x4a, ®4a);
pci_write_config_word(dev, 0x4a, reg4a|u_speed);
}
} else {
if (reg48 & u_flag)
pci_write_config_word(dev, 0x48, reg48 & ~u_flag);
if (reg4a & a_speed)
pci_write_config_word(dev, 0x4a, reg4a & ~a_speed);
}
slc90e66_tune_pio(drive, slc90e66_dma_2_pio(speed));
return ide_config_drive_speed(drive, speed);
}
static int slc90e66_config_drive_for_dma (ide_drive_t *drive)
{
u8 speed = ide_max_dma_mode(drive);
if (!speed)
return 0;
(void) slc90e66_tune_chipset(drive, speed);
return ide_dma_enable(drive);
}
static int slc90e66_config_drive_xfer_rate (ide_drive_t *drive)
{
drive->init_speed = 0;
if (ide_use_dma(drive) && slc90e66_config_drive_for_dma(drive))
return 0;
if (ide_use_fast_pio(drive))
slc90e66_tune_drive(drive, 255);
return -1;
}
static void __devinit init_hwif_slc90e66 (ide_hwif_t *hwif)
{
u8 reg47 = 0;
u8 mask = hwif->channel ? 0x01 : 0x02; /* bit0:Primary */
hwif->autodma = 0;
if (!hwif->irq)
hwif->irq = hwif->channel ? 15 : 14;
hwif->speedproc = &slc90e66_tune_chipset;
hwif->tuneproc = &slc90e66_tune_drive;
pci_read_config_byte(hwif->pci_dev, 0x47, ®47);
if (!hwif->dma_base) {
hwif->drives[0].autotune = 1;
hwif->drives[1].autotune = 1;
return;
}
hwif->atapi_dma = 1;
hwif->ultra_mask = 0x1f;
hwif->mwdma_mask = 0x06;
hwif->swdma_mask = 0x04;
if (!hwif->udma_four) {
/* bit[0(1)]: 0:80, 1:40 */
hwif->udma_four = (reg47 & mask) ? 0 : 1;
}
hwif->ide_dma_check = &slc90e66_config_drive_xfer_rate;
if (!noautodma)
hwif->autodma = 1;
hwif->drives[0].autodma = hwif->autodma;
hwif->drives[1].autodma = hwif->autodma;
}
static ide_pci_device_t slc90e66_chipset __devinitdata = {
.name = "SLC90E66",
.init_hwif = init_hwif_slc90e66,
.channels = 2,
.autodma = AUTODMA,
.enablebits = {{0x41,0x80,0x80}, {0x43,0x80,0x80}},
.bootable = ON_BOARD,
};
static int __devinit slc90e66_init_one(struct pci_dev *dev, const struct pci_device_id *id)
{
return ide_setup_pci_device(dev, &slc90e66_chipset);
}
static struct pci_device_id slc90e66_pci_tbl[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_EFAR, PCI_DEVICE_ID_EFAR_SLC90E66_1), 0},
{ 0, },
};
MODULE_DEVICE_TABLE(pci, slc90e66_pci_tbl);
static struct pci_driver driver = {
.name = "SLC90e66_IDE",
.id_table = slc90e66_pci_tbl,
.probe = slc90e66_init_one,
};
static int __init slc90e66_ide_init(void)
{
return ide_pci_register_driver(&driver);
}
module_init(slc90e66_ide_init);
MODULE_AUTHOR("Andre Hedrick");
MODULE_DESCRIPTION("PCI driver module for SLC90E66 IDE");
MODULE_LICENSE("GPL");
|
